EP0020038A1 - Procédé de tissage pour la fabrication d'une bande transporteuse imprégnée - Google Patents

Procédé de tissage pour la fabrication d'une bande transporteuse imprégnée Download PDF

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Publication number
EP0020038A1
EP0020038A1 EP80301500A EP80301500A EP0020038A1 EP 0020038 A1 EP0020038 A1 EP 0020038A1 EP 80301500 A EP80301500 A EP 80301500A EP 80301500 A EP80301500 A EP 80301500A EP 0020038 A1 EP0020038 A1 EP 0020038A1
Authority
EP
European Patent Office
Prior art keywords
weft
fabric
ply
yarns
carcass
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP80301500A
Other languages
German (de)
English (en)
Inventor
Gilbert Ernest Watts
Jean Robinson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JH Fenner and Co Ltd
Original Assignee
JH Fenner and Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by JH Fenner and Co Ltd filed Critical JH Fenner and Co Ltd
Publication of EP0020038A1 publication Critical patent/EP0020038A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D11/00—Double or multi-ply fabrics not otherwise provided for

Definitions

  • This invention relates to conveyor beltings comprising a textile fabric carcass impregnated and coated with a polymeric material and more particularly to such beltings wherein the carcass consists of an integrally woven structure having a plurality of weft layers.
  • Such belting is sometimes referred to as solid woven belting.
  • Impregnation of a textile carcass whether by rubber latex or by a plastics material such as poly (vinylchloride) (PVC) requires great care in order to ensure thorough and uniform penetration of the impregnatn into the core of the fabric, that is without penetration into the interior of the core being limited to quite localized areas. In the latter event, the resultant belting exhibits inferior qualities of tensile strength and durability. Moreover, even with the inclusion of flame retardant materials in the polymer compound, inadequately impregnated carcasses cannot be rendered fire resistant to the high standard required for use underground in coal mines.
  • An object of the present invention is to provide a method for manufacturing a relatively thick, high strength, solid woven conveyor belting which can be rendered fire resistant, for example to the standard required for use underground in coal mines in the United Kingdom.
  • a method for manufacturing solid woven beltings comprises weaving a textile carcass having five or more integrally woven layers of weft and subsequently impregnating and coating said carcass with a polymeric material, (such as PVC), said carcass being woven in such a manner that the warp yarns define a plurality of continuous flow paths along which the impregnant can travel from the outer surfaces of the carcass to the interior core and each of the warp yarns defines such a path.
  • the flow paths may be provided by warp yarns, each of which passes from an outermost ply to the central ply.
  • the present invention provides a method for manufacturing solid woven beltings wherein a textile fabric carcass consisting of five or more layers of weft is woven to form an integrated structure, said weft layers being interlocked solely by dual function warp yarns all of which serve simultaneously to impart tension resistant strength to the fabric, said carcass being subsequently impregnated and coated with a polymeric material, such as PPC.
  • a textile fabric carcass consisting of five or more layers of weft is woven to form an integrated structure, said weft layers being interlocked solely by dual function warp yarns all of which serve simultaneously to impart tension resistant strength to the fabric, said carcass being subsequently impregnated and coated with a polymeric material, such as PPC.
  • each of the warp yarns serves the dual function of imparting tension resistant strength to the carcass whilst simultaneously constituting means whereby five separate weft layers are interlocked.
  • the invention includes solid woven beltings whenever produced by the methods of the invention.
  • the invention also includes a textile carcass woven as above for use in the methods of the invention.
  • the fabric has five plies, that is to say at each weft position there are five weft yarns traversing the fabric in superposed relationship and, in order to provide a ready flow path for the impregnating material, each warp yarn passes (1) over (or under) a weft yarn in an outermost ply, (2) between two adjacent weft yarns in an intermediate ply and then (3) under (or over, respectively) a weft yarn in the centre ply, the said weft yarns in the intermediate ply being in columns of weft yarns lying between columns containing respectively the said weft yarn in the outermost ply and the said weft yarn in the centre ply.
  • the columns containing the said weft yarns in the outermost and centre plies are immediately adjacent to the said weft yarns in the intermediate ply.
  • the fabric has seven plies, that is to say at each weft position there are seven weft yarns traversing the fabric in superposed relationship.
  • each warp yarn passes (1) over (or under) a weft yarn in an outermost ply, (2) between two adjacent weft yarns in each of two intermediate plies and then (3) under (or over respectively) a weft yarn in the centre ply, the weft yarns in the intermediate plies lying between columns containing respectively the weft yarn in the outermost ply and the weft yarn in the centre ply.
  • the columns containing respectively the weft yarn in the outermost and centre plies are immediately adjacent to the weft yarns in the intermediate plies.
  • the invention may readily be used for the production of fabric from natural yarns such as cotton, it is particularly advantageous when used in the weaving of fabrics which incorporate a substantial proportion of synthetic filament yarns such as polyesters or polyamides or which consist wholly of such synthetic yarns.
  • the fabric has an interstitial structure and a plastics flow path which present proper interstices for maximum take-up of impregnating material and adhesion with the fabric together with substantially uniform penetration of the impregnating material throughout the whole cross-section of the fabric.
  • the fabric is a textile core for conveyor or power transmission belting
  • the invention thus provides a core in which all the plies are interlocked as woven and before impregnation with a polymer, for example P.V.C. is effected.
  • a significant advantage of this construction lies in the excellent adhesion between the interconnected plies and between the fabric core and the enveloping surface coating of the impregnating material, in the latter case due to the surface pockets presented by the fabric.
  • the fabric illustrated in Fig.l of the drawings is a five ply fabric and accordingly at each weft position there are five weft yarns 10,12,14,16,18 traversing the fabric and arranged in superposed relationship in columns.
  • the series of weft yarns 10 and 18 define outermost plies
  • the series of weft yarns 12 and 16 define intermediate plies
  • series of weft yarns 14 defines a centre ply.
  • These five plies are interlocked solely by the warp yarns which are designated 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42.
  • the warp yarns are arranged to lock the outermost plies to the centre ply and pass through the intermediate plies; this is accomplished by taking each warp yarn, for example the warp yarn 20 over a weft yarn 10 in the top ply, between adjacent weft yarns 12 in an intermediate ply and then under the next but two weft yarn 14 (viewed in the warp direction) of the centre ply, and so one along the length of the fabric.
  • the warp yarn 42 is taken under a weft yarn 18 in the bottom ply, between adjacent weft yarns 16 in an intermediate ply and over the next but two weft yarn 14 in the centre ply, and so on.
  • this five ply construction is achieved by the use of twelve warp yarns and that the fabric may readily be woven on a conventional twelve shaft loom (giving 30 picks per repeat of the weave).
  • the binder warp yarns all follow identical paths for a full tensile contribution.
  • Each warp yarn binds together three plies, repeating over six picks in each ply.
  • the arrangement of the binder warp yarns is symmetrical about -the centre ply and consists of oppositely disposed pairs of warp yarns, each pair containing 1,3,5 picks on the outermost, intermediate and centre plies respectively.
  • warp yarns employed by the invention will be seen to provide a relatively open weave in the resulting fabric and although the five plies in the fabric are securely locked together, the warp yarns nevertheless will be seen to create well-defined flow paths leading to the centre of the fabric so that when the fabric is presented for impregnation by a plastics compound such as a polyvinyl compound, the latter readily penetrates completely through to the centre of the core and, due to the open nature of the weave, is also able to surround and enclose completely each weft and warp yarn. This is important from the standpoint of fire resistance since the plastics compound normally incorporates fire retardants.
  • weave may be used within the scope of the invention.
  • the precise weave chosen in any particular case is determined by such factors as the operational performance expected of the fabric, the nature of the plastics impregnant and the degree of plastics take-up required.
  • the fabric which is illustrated by way of example in Fig.l is a five ply fabric and one such fabric which is suitable as the carcass for belting is of the five ply construction shown, with the following additional characteristics:
  • the belting carcasses may comprise five plies as illustrated in Fig.l, but in general, carcasses comprising an odd number of plies of at least five may be used.
  • the practical limitation is the carcass itself because the thickness and stiffness of a carcass having an excessive number of plies is such as to make it almost impossible to flex round pulleys.
  • With a five ply construction it is possible to achieve a belting strength as high as 15,000 to 20,000 lbs/inch width which is capable of coping with all but the very exceptional high horsepower drives which are encountered.
  • the seven ply construction illustrated in Fig.3 and described below may be used.
  • Fig.2 shows a portion of belting suitable for conveyor belting or for power transmission belting and indicates, entirely diagrammatically, the plastic outer sheathing 50 which remains after the textile carcass generally designated 52 has been impregnated.
  • the impregnant is a material such as polyvinylchloride
  • impregnation is readily effected by passing the carcass 52 through a liquid suspension or dispersion of ungelled polyvinyl chloride together with a plasticiser and thereafter subjecting the impregnated fabric to a heat treatment in order to gel the polyvinyl chloride.
  • the open nature of the weave resulting from the invention facilitates the flow of the impregnant into the core and acts strongly against the formation of cavities at the belt centre.
  • the fabric illustrated in Fig.3 of the drawings is a seven ply fabric and accordingly at each weft position there are seven weft yarns, 60, 62, 64, 66, 68, 70, 72 traversing the fabric and arranged in superposed relationship in columns. These seven plies are interlocked solely by the warp yarns which are designated 80, 82, 84, 86, 88, 90, 92, 94, 96, 98, 100, 102, 104, 106, 108, 110.
  • the principle of construction for the seven ply fabric of Fig.3 is the same as for the five ply fabric of Fig.l.
  • the warp yarns are arranged to lock the outermost plies to the centre ply and pass through the intermediate plies.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Woven Fabrics (AREA)
  • Reinforced Plastic Materials (AREA)
  • Laminated Bodies (AREA)
EP80301500A 1979-05-10 1980-05-08 Procédé de tissage pour la fabrication d'une bande transporteuse imprégnée Withdrawn EP0020038A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB7916288 1979-05-10
GB7916288 1979-05-10

Publications (1)

Publication Number Publication Date
EP0020038A1 true EP0020038A1 (fr) 1980-12-10

Family

ID=10505073

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80301500A Withdrawn EP0020038A1 (fr) 1979-05-10 1980-05-08 Procédé de tissage pour la fabrication d'une bande transporteuse imprégnée

Country Status (7)

Country Link
EP (1) EP0020038A1 (fr)
JP (1) JPS55156039A (fr)
AU (1) AU533640B2 (fr)
CA (1) CA1143253A (fr)
ES (1) ES491325A0 (fr)
IN (1) IN152110B (fr)
ZA (1) ZA802683B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116836419A (zh) * 2023-08-10 2023-10-03 枣庄天宏新材料科技有限公司 一种高强度阻燃输送带及其制备方法和应用

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2800701A (en) * 1954-01-20 1957-07-30 Fenner Co Ltd J H Production of power transmission and conveyor belting
DE2801466A1 (de) * 1977-01-13 1978-07-20 R T I S A Rhodanienne De Tissu Gewebestruktur und deren anwendungsmoeglichkeiten

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2800701A (en) * 1954-01-20 1957-07-30 Fenner Co Ltd J H Production of power transmission and conveyor belting
DE2801466A1 (de) * 1977-01-13 1978-07-20 R T I S A Rhodanienne De Tissu Gewebestruktur und deren anwendungsmoeglichkeiten

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116836419A (zh) * 2023-08-10 2023-10-03 枣庄天宏新材料科技有限公司 一种高强度阻燃输送带及其制备方法和应用

Also Published As

Publication number Publication date
ES8104054A1 (es) 1981-04-16
ZA802683B (en) 1981-05-27
CA1143253A (fr) 1983-03-22
IN152110B (fr) 1983-10-22
AU533640B2 (en) 1983-12-01
ES491325A0 (es) 1981-04-16
JPS55156039A (en) 1980-12-04
AU5821680A (en) 1980-11-13

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Effective date: 19810220

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Inventor name: ROBINSON, JEAN

Inventor name: WATTS, GILBERT ERNEST